Furnace.



A. W. IVIOYER.

FURNACE.

APPLlCATlON FILED NOV. 5. 1911.

1 131?,1 m Patented May 7, 1918.

3 SHEETS-SHEET I.

Svwemtoz A. W. MOYER.

FURNACE.

APPLICATION FILED NOV-5,1917.

Patented May 7,1918.

III 6%9BI I.

3 SHEETS-SHEET 2.

A. w. MOYEB.

FURNACE.

APPLICATION FILED moms. I917.

Patented. May 7,1918.

3 SHEETS-SHEET 3 :1 i w. MOYER, or BELMAR, new JERSEY.

runcn.

Specification of Letters Patent.

Patenteolllway't', iei.

Application filed November 5, 1917. Serial No. 200,240.

To all whom it may concern:

Be it known that I, ALBERT W. MOYER, a citizen of the United States of America, residing at Belmar, New Jersey, have invented a new and useful Furnace, of which the fol lowing is a specification.

My present invention relates to what I have termed, bung top furnaces, of the type wherein the heating chamber is closed by a removable cover or top, this type of furnaces being especially suited to the treatment of heavy guns and other large objects.

One of the principal objects of the invention is to so construct the furnace that it will be capable of supporting the weight and withstanding the strains to which it is subjected.

Other objects are to enable accurate control of the heat and to facilitate the operation of the heat controllin means.

Further objects are to acilitate the handling and storing of the furnace top sections, to enable repairs and renewals being readily made to those parts which are most subjected to wear and to protect against overheating those parts of the furnace supporting structure which are most liable to be injured by heat.

Briefly considered, the furnace comprises a furnace body which is supported within a cradle-like structure having special provision for supporting the side walls of the heating chamber, the heat being supplied by burners discharging into combustion chambers at the sides of the heating chamber, said combustion chambers communicatin with longitudinal distribution fines which 1n turn communicate with transverse passages opening into the sides of the heating chamber.

The combustion chambers are preferably made with removable walls which provide access to the interior for purpose of inspection. repair, etc.

The furnace top is made in arched sections which are made capable of nesting one on top of the other by the provision of supporting steps on the upper edge portions of the sections arranged to take the weight of the sections superposed thereon.

Other features of the invention and the details of construction will appear as the specification proceeds.

In the accompanying drawings, I have illustrated the invention embodied in a practical and preferred form but I will have it understood that variouschanges and modifications may be made without departure from the true spirit and scope of the invention.

In these drawings:

Figure 1 is a cross sectional View of a furnace exemplifying the invention, the nesting action of the top sections being indicated in dotted lines.

Fig. 2 is a broken longitudinal sectional view of this furnace.

Fig. 3 is a horizontal sectional view taken substantially on the plane of line- 33 of Fig. 1.

The body of the furnace illustrated comprises a hearth 7 and side walls 8, these walls defining, with the removabletop sections 9, a heating chamber 10 for the guns or other objects to be treated.

The top sections 9 are made in convenient size for handling and are of arched configuration as indicated in Fig. 1, so as to bridge over the space between the side walls.

The edges of these sections preferably rest in sealing troughs 11, provided along the upper edge portions of the side walls and supporting a suitable sealing means, such as sand in sealing engagement with the edges of such top sections.

The cover sections may be provided with eyes 12 for receiving hoisting hooks or other devices for handling the same and provision is made for nesting the sections one on top of another by providing each section with angular steps 13 on the top thereof near theedges to form bearings for the edge portions of a top section superposed thereon. In Fig. 1, I have indicated in dotted lines how this nesting is accomplished.

The so called cradle which forms the foundation and support for the furnace structure is made up of girders 14. extending transversely beneath the hearth of the furnace, upright stays 15 rising from these girders at the outer sides of the furnace walls and the inclined braces 16 extending from the outer laterally rojected ends of the transverse girders to the upper end portions of the uprights. This structure, it will be seen, provides a bed or cradle in which the furnace body rests and the side walls of the furnace so as to positively prevent spreading thereof.

The transverse girders located as they are. beneath the hearth, are subjected to considerable heat, and to protect them from injury from such a cause, they are preferably inwhich supports cased in cooling chambers 17 which, as indicated in Fig. 2, may simply be 1n the form of housings surrounding the girders and providin free air space therearound. ThlS' construction effectually prevents heating of the girders to a point where they might otherwise yield or give way under stress.

Aprons 18 ma be applied to the inclined braces to thus orm chambers at the sides of the furnace for housing the fuel feeding.

the left hand side of the furnace is shown discharging upwardly through the bottom wall of the combustion chamber, but the burner may be arranged to discharge in through the side, end or top walls of the combustion chambers as indicated at 24, 25 and 26 in Fig. 3. The first form described possesses the advantage of producing a more natural injector action of the burner and at the same time the burner is located in a convenient place where it is protected from accidental operation or injury.

In Fig. 1.is shown also how the end plate 27 or wall of the combustion chamber may be removably secured in place as by means of the detachable corner irons 28, so that said wall may be readily removed when it is desired to inspect or repair the interior ofthe combustion "chamber. The removal of this wall also enables access to the distribing flue and the transverse discharge flues at the inner end of the combustion chamber.

The heat products after circulating about the objects under treatment in the heating chamber are exhausted through outlets 29 in the opposite side walls of the heating chamber near the bottom thereof, these lateral flues 29 communicating with downwardly extending flues 30 which communicate with flues 31 extending transversely beneath the hearth, the products being taken from these transverse flues through down flues 32 intoa main waste flue 33 which leads to a suitable outlet, usually in the form of an upright vent flue located at one end of the furnace. The transverse flues 31 beneath the hearth are in communication with each other by means of short connecting passages 34. This net work of waste flues beneath the hearth assists in keeping the hearth at the proper temperature.

The circulation is controlled and the heat thereby governed by means of valves in the form of plu s 35 working in assages 36 in line with t e transverse out ets 29, these valve plugs being of a size to close off communication between the lateral outlets 29 and the down flues 30 as indicated at the right in Fig. 1. The valve passages 36 may be closed up at their outer ends by plates 37 which are bolted or otherwise removably secured in place so that upon removal of these closure plates, the valves may be withdrawn for repair if necessary or for inspection of the passages and flues.

The valves are shown provided with outwardly extending rods 38 serving as handles for operating the same, these rods passing through openings provided therefor in the removable closure plates 37 at which points they may be guided if desirable.

The action of the furnace may be inspected through sight openings 39 provided in the top, these sight openings being normally closed by plugs 40, shown provided with handles 41 by which they may be readily manipulated. Convenient ins ectlon is made possible by the provision o runways or platforms 42 along the upper side portions of the furnace, these runways being preferably supported on the upright stays 15 of the cradle frame and being suitably braced as indicated at 43.

In addition to observin the action, the furnace may be controller? from these elevated platforms by the extension of means foroperating the valves up to a point within reach of the operator on the platform. Such means are indicated as a hand wheel 44 on the upper end of an upright shaft 45, which carries at its lower end a pinion 46 meshing with a rack 47 on the outer end of the valve operating rod. With this means the operator may observe the conditions within the furnace and then regulate the valves until he gets the effect desired and without moving from the oint of observation. Handles 48 are preerably provided on the outer ends of the valve rods so that said rods may also be operated from below.

What I claim 1. In a furnace of the character described, a furnace body embodying a hearth, side walls and a removable top for bridging the side walls, and a cradle for preventing spreading of the side walls while permitting removal of the furnace top comprising girders extending transversely of the furnace body entirely across beneath the hearth and projecting laterally beyond the side walls of the furnace, upright stays supportingi the side walls and secured at their lower en s to the transverse girders and inclined braces extending from the outer laterally extended ends of the transverse girders to the upper portions of the upright stays.

means located in the chambers thus provided.

weasel the furnace, upright stays supporting theside walls and secured at their lower ends to the transverse girders, inclined braces extending from the outer laterally extended ends of the transverse girders to the upper portions of the upright stays, aprons carried y said inclined braces to form chambers alongside the furnace body and fuel feeding 3. In a furnace of the character set forth, a furnace body embodying a hearth and side walls and a sectional top for said furnace body comprising members arched to bridge the side walls, each of said members having steps on the upper edge portions thereof to form supports for a top member rested thereon, whereby said top members may be nested one on top of the other.

4. In a furnace of the character described, a furnace body comprising a hearth, side walls and a movable top wall bridging the side walls and forming in conjunction with said side walls and hearth, a heating chamber, combustion chambers at the opposite side walls, said side walls each having a longitudinal flue therein establishing communication between the combustion chambers of said side wall and having transverse flues opening from the longitudinal flue into the heating chamber, burners dischargin into the several combustion chambers an outlet flues extending from the heating chamber.

5. In a furnace of the character described, a furnace body having a heating chamber defined by said walls, a hearth and a top, said side walls having distributing flues extending longitudinally of the furnace and outlet flues extending transversely from said longitudinal 'flues into the heating chamber, combustion chambers at each side wall of the furnace disposed at difl'erent points longitudinally of the furnace, and in communication with the longitudinal flues aforesaid, independently regulatable burners discharging into the combustion chambers at the opposite sides of the furnace and outlet flues for the waste gases extending from the lower portion of. the heating chamber.

6. In a furnace of the character described, a furnace body having a heating chamber and provided with a removable top, covering saidchamber, operators platforms on the top of the furnace at the o posite sides of the removable top, said plat orms being elevated to provide access to the removable furnace top, heat controlling means in the lower part of the furnace below the platforms and operating connections extending from said elevated platforms to said heat controlling means.

7. In a furnace of the character described, a furnace body comprising a hearth, side walls rising therefrom, a removable top arched over the side walls and forming in conjunction with said side walls and hearth, a heating chamber, combustion chambers at opposite sides of the furnace body communi eating with the heating chamber through transverse flues extending through the side walls, burners discharging upwardly into the combustion chambers through the bottoms of said combustion chambers and outlet flues leading from the lower portion of the heating chamber, whereby the gases of combustion from the burners will be caused to rise in the combustion chambers, enter the heating chamber at opposite sides thereof and pass out of the lower portion of the heating chamber.

8. In a furnace of the character described, a furnace body comprising a hearth, upright side walls rising from said hearth and a movable top wall arched over between the side walls and forming in conjunction with said side walls and hearth, a heating chamber, combustion chambers on the upper ortions of the side walls at opposite sides 0 the furnace and in communication with the heating chamber through a plurality of lateral flues opening from said combustion chambers into the heating chamber, burners discharging into the combustion chambers and outlet flues extending from the lower portion of the heating chamber.

9. In a furnace of the character described, a furnace body comprising a hearth, upstanding side walls and a removable top arched over between the side walls and forming in conjunction with said side walls and hearth, a heating chamber, combustion chambers on the opposite side walls in communication with the heating chamber through transverse flues extending through the side walls from the combustion chambers into the heating chamber, burners discharging into the combustion chambers and a cradle for said furnace body comprising transverse girders beneath the hearth extendin across etween the opposite sides of the mace, supporting stays at the outer sides of the side walls secured at their lower ends to the transverse girders and braces for said stays connected between the stays and the girders, whereby the side walls of the furnace are supported against spreading and without interfering with the removal of the furnace t p 7 near w. MO E IIII tit 

